1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * INT3400 thermal driver
4 *
5 * Copyright (C) 2014, Intel Corporation
6 * Authors: Zhang Rui <[email protected]>
7 */
8
9 #include <linux/module.h>
10 #include <linux/platform_device.h>
11 #include <linux/acpi.h>
12 #include <linux/thermal.h>
13 #include "acpi_thermal_rel.h"
14
15 #define INT3400_THERMAL_TABLE_CHANGED 0x83
16 #define INT3400_ODVP_CHANGED 0x88
17 #define INT3400_KEEP_ALIVE 0xA0
18 #define INT3400_FAKE_TEMP (20 * 1000) /* faked temp sensor with 20C */
19
20 enum int3400_thermal_uuid {
21 INT3400_THERMAL_ACTIVE = 0,
22 INT3400_THERMAL_PASSIVE_1,
23 INT3400_THERMAL_CRITICAL,
24 INT3400_THERMAL_ADAPTIVE_PERFORMANCE,
25 INT3400_THERMAL_EMERGENCY_CALL_MODE,
26 INT3400_THERMAL_PASSIVE_2,
27 INT3400_THERMAL_POWER_BOSS,
28 INT3400_THERMAL_VIRTUAL_SENSOR,
29 INT3400_THERMAL_COOLING_MODE,
30 INT3400_THERMAL_HARDWARE_DUTY_CYCLING,
31 INT3400_THERMAL_MAXIMUM_UUID,
32 };
33
34 static char *int3400_thermal_uuids[INT3400_THERMAL_MAXIMUM_UUID] = {
35 "3A95C389-E4B8-4629-A526-C52C88626BAE",
36 "42A441D6-AE6A-462b-A84B-4A8CE79027D3",
37 "97C68AE7-15FA-499c-B8C9-5DA81D606E0A",
38 "63BE270F-1C11-48FD-A6F7-3AF253FF3E2D",
39 "5349962F-71E6-431D-9AE8-0A635B710AEE",
40 "9E04115A-AE87-4D1C-9500-0F3E340BFE75",
41 "F5A35014-C209-46A4-993A-EB56DE7530A1",
42 "6ED722A7-9240-48A5-B479-31EEF723D7CF",
43 "16CAF1B7-DD38-40ED-B1C1-1B8A1913D531",
44 "BE84BABF-C4D4-403D-B495-3128FD44dAC1",
45 };
46
47 struct odvp_attr;
48
49 struct int3400_thermal_priv {
50 struct acpi_device *adev;
51 struct platform_device *pdev;
52 struct thermal_zone_device *thermal;
53 int art_count;
54 struct art *arts;
55 int trt_count;
56 struct trt *trts;
57 u32 uuid_bitmap;
58 int rel_misc_dev_res;
59 int current_uuid_index;
60 char *data_vault;
61 int odvp_count;
62 int *odvp;
63 u32 os_uuid_mask;
64 int production_mode;
65 struct odvp_attr *odvp_attrs;
66 };
67
68 static int evaluate_odvp(struct int3400_thermal_priv *priv);
69
70 struct odvp_attr {
71 int odvp;
72 struct int3400_thermal_priv *priv;
73 struct device_attribute attr;
74 };
75
76 static BIN_ATTR_SIMPLE_RO(data_vault);
77
imok_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)78 static ssize_t imok_store(struct device *dev, struct device_attribute *attr,
79 const char *buf, size_t count)
80 {
81 struct int3400_thermal_priv *priv = dev_get_drvdata(dev);
82 acpi_status status;
83 int input, ret;
84
85 ret = kstrtouint(buf, 10, &input);
86 if (ret)
87 return ret;
88 status = acpi_execute_simple_method(priv->adev->handle, "IMOK", input);
89 if (ACPI_FAILURE(status))
90 return -EIO;
91
92 return count;
93 }
94
95 static DEVICE_ATTR_WO(imok);
96
97 static struct attribute *imok_attr[] = {
98 &dev_attr_imok.attr,
99 NULL
100 };
101
102 static const struct attribute_group imok_attribute_group = {
103 .attrs = imok_attr,
104 };
105
available_uuids_show(struct device * dev,struct device_attribute * attr,char * buf)106 static ssize_t available_uuids_show(struct device *dev,
107 struct device_attribute *attr,
108 char *buf)
109 {
110 struct int3400_thermal_priv *priv = dev_get_drvdata(dev);
111 int i;
112 int length = 0;
113
114 if (!priv->uuid_bitmap)
115 return sprintf(buf, "UNKNOWN\n");
116
117 for (i = 0; i < INT3400_THERMAL_MAXIMUM_UUID; i++) {
118 if (priv->uuid_bitmap & (1 << i))
119 length += sysfs_emit_at(buf, length, "%s\n", int3400_thermal_uuids[i]);
120 }
121
122 return length;
123 }
124
current_uuid_show(struct device * dev,struct device_attribute * devattr,char * buf)125 static ssize_t current_uuid_show(struct device *dev,
126 struct device_attribute *devattr, char *buf)
127 {
128 struct int3400_thermal_priv *priv = dev_get_drvdata(dev);
129 int i, length = 0;
130
131 if (priv->current_uuid_index >= 0)
132 return sprintf(buf, "%s\n",
133 int3400_thermal_uuids[priv->current_uuid_index]);
134
135 for (i = 0; i <= INT3400_THERMAL_CRITICAL; i++) {
136 if (priv->os_uuid_mask & BIT(i))
137 length += sysfs_emit_at(buf, length, "%s\n", int3400_thermal_uuids[i]);
138 }
139
140 if (length)
141 return length;
142
143 return sprintf(buf, "INVALID\n");
144 }
145
int3400_thermal_run_osc(acpi_handle handle,char * uuid_str,int * enable)146 static int int3400_thermal_run_osc(acpi_handle handle, char *uuid_str, int *enable)
147 {
148 u32 ret, buf[2];
149 acpi_status status;
150 int result = 0;
151 struct acpi_osc_context context = {
152 .uuid_str = uuid_str,
153 .rev = 1,
154 .cap.length = 8,
155 .cap.pointer = buf,
156 };
157
158 buf[OSC_QUERY_DWORD] = 0;
159 buf[OSC_SUPPORT_DWORD] = *enable;
160
161 status = acpi_run_osc(handle, &context);
162 if (ACPI_SUCCESS(status)) {
163 ret = *((u32 *)(context.ret.pointer + 4));
164 if (ret != *enable)
165 result = -EPERM;
166
167 kfree(context.ret.pointer);
168 } else
169 result = -EPERM;
170
171 return result;
172 }
173
set_os_uuid_mask(struct int3400_thermal_priv * priv,u32 mask)174 static int set_os_uuid_mask(struct int3400_thermal_priv *priv, u32 mask)
175 {
176 int cap = 0;
177
178 /*
179 * Capability bits:
180 * Bit 0: set to 1 to indicate DPTF is active
181 * Bi1 1: set to 1 to active cooling is supported by user space daemon
182 * Bit 2: set to 1 to passive cooling is supported by user space daemon
183 * Bit 3: set to 1 to critical trip is handled by user space daemon
184 */
185 if (mask)
186 cap = (priv->os_uuid_mask << 1) | 0x01;
187
188 return int3400_thermal_run_osc(priv->adev->handle,
189 "b23ba85d-c8b7-3542-88de-8de2ffcfd698",
190 &cap);
191 }
192
current_uuid_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)193 static ssize_t current_uuid_store(struct device *dev,
194 struct device_attribute *attr,
195 const char *buf, size_t count)
196 {
197 struct int3400_thermal_priv *priv = dev_get_drvdata(dev);
198 int ret, i;
199
200 for (i = 0; i < INT3400_THERMAL_MAXIMUM_UUID; ++i) {
201 if (!strncmp(buf, int3400_thermal_uuids[i],
202 sizeof(int3400_thermal_uuids[i]) - 1)) {
203 /*
204 * If we have a list of supported UUIDs, make sure
205 * this one is supported.
206 */
207 if (priv->uuid_bitmap & BIT(i)) {
208 priv->current_uuid_index = i;
209 return count;
210 }
211
212 /*
213 * There is support of only 3 policies via the new
214 * _OSC to inform OS capability:
215 * INT3400_THERMAL_ACTIVE
216 * INT3400_THERMAL_PASSIVE_1
217 * INT3400_THERMAL_CRITICAL
218 */
219
220 if (i > INT3400_THERMAL_CRITICAL)
221 return -EINVAL;
222
223 priv->os_uuid_mask |= BIT(i);
224
225 break;
226 }
227 }
228
229 if (priv->os_uuid_mask) {
230 ret = set_os_uuid_mask(priv, priv->os_uuid_mask);
231 if (ret)
232 return ret;
233 }
234
235 return count;
236 }
237
238 static DEVICE_ATTR_RW(current_uuid);
239 static DEVICE_ATTR_RO(available_uuids);
240 static struct attribute *uuid_attrs[] = {
241 &dev_attr_available_uuids.attr,
242 &dev_attr_current_uuid.attr,
243 NULL
244 };
245
246 static const struct attribute_group uuid_attribute_group = {
247 .attrs = uuid_attrs,
248 .name = "uuids"
249 };
250
int3400_thermal_get_uuids(struct int3400_thermal_priv * priv)251 static int int3400_thermal_get_uuids(struct int3400_thermal_priv *priv)
252 {
253 struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER, NULL};
254 union acpi_object *obja, *objb;
255 int i, j;
256 int result = 0;
257 acpi_status status;
258
259 status = acpi_evaluate_object(priv->adev->handle, "IDSP", NULL, &buf);
260 if (ACPI_FAILURE(status))
261 return -ENODEV;
262
263 obja = (union acpi_object *)buf.pointer;
264 if (obja->type != ACPI_TYPE_PACKAGE) {
265 result = -EINVAL;
266 goto end;
267 }
268
269 for (i = 0; i < obja->package.count; i++) {
270 objb = &obja->package.elements[i];
271 if (objb->type != ACPI_TYPE_BUFFER) {
272 result = -EINVAL;
273 goto end;
274 }
275
276 /* UUID must be 16 bytes */
277 if (objb->buffer.length != 16) {
278 result = -EINVAL;
279 goto end;
280 }
281
282 for (j = 0; j < INT3400_THERMAL_MAXIMUM_UUID; j++) {
283 guid_t guid;
284
285 guid_parse(int3400_thermal_uuids[j], &guid);
286 if (guid_equal((guid_t *)objb->buffer.pointer, &guid)) {
287 priv->uuid_bitmap |= (1 << j);
288 break;
289 }
290 }
291 }
292
293 end:
294 kfree(buf.pointer);
295 return result;
296 }
297
production_mode_show(struct device * dev,struct device_attribute * attr,char * buf)298 static ssize_t production_mode_show(struct device *dev, struct device_attribute *attr,
299 char *buf)
300 {
301 struct int3400_thermal_priv *priv = dev_get_drvdata(dev);
302
303 return sysfs_emit(buf, "%d\n", priv->production_mode);
304 }
305
306 static DEVICE_ATTR_RO(production_mode);
307
production_mode_init(struct int3400_thermal_priv * priv)308 static int production_mode_init(struct int3400_thermal_priv *priv)
309 {
310 unsigned long long mode;
311 acpi_status status;
312 int ret;
313
314 priv->production_mode = -1;
315
316 status = acpi_evaluate_integer(priv->adev->handle, "DCFG", NULL, &mode);
317 /* If the method is not present, this is not an error */
318 if (ACPI_FAILURE(status))
319 return 0;
320
321 ret = sysfs_create_file(&priv->pdev->dev.kobj, &dev_attr_production_mode.attr);
322 if (ret)
323 return ret;
324
325 priv->production_mode = mode;
326
327 return 0;
328 }
329
production_mode_exit(struct int3400_thermal_priv * priv)330 static void production_mode_exit(struct int3400_thermal_priv *priv)
331 {
332 if (priv->production_mode >= 0)
333 sysfs_remove_file(&priv->pdev->dev.kobj, &dev_attr_production_mode.attr);
334 }
335
odvp_show(struct device * dev,struct device_attribute * attr,char * buf)336 static ssize_t odvp_show(struct device *dev, struct device_attribute *attr,
337 char *buf)
338 {
339 struct odvp_attr *odvp_attr;
340
341 odvp_attr = container_of(attr, struct odvp_attr, attr);
342
343 return sprintf(buf, "%d\n", odvp_attr->priv->odvp[odvp_attr->odvp]);
344 }
345
cleanup_odvp(struct int3400_thermal_priv * priv)346 static void cleanup_odvp(struct int3400_thermal_priv *priv)
347 {
348 int i;
349
350 if (priv->odvp_attrs) {
351 for (i = 0; i < priv->odvp_count; i++) {
352 sysfs_remove_file(&priv->pdev->dev.kobj,
353 &priv->odvp_attrs[i].attr.attr);
354 kfree(priv->odvp_attrs[i].attr.attr.name);
355 }
356 kfree(priv->odvp_attrs);
357 }
358 kfree(priv->odvp);
359 priv->odvp_count = 0;
360 }
361
evaluate_odvp(struct int3400_thermal_priv * priv)362 static int evaluate_odvp(struct int3400_thermal_priv *priv)
363 {
364 struct acpi_buffer odvp = { ACPI_ALLOCATE_BUFFER, NULL };
365 union acpi_object *obj = NULL;
366 acpi_status status;
367 int i, ret;
368
369 status = acpi_evaluate_object(priv->adev->handle, "ODVP", NULL, &odvp);
370 if (ACPI_FAILURE(status)) {
371 ret = -EINVAL;
372 goto out_err;
373 }
374
375 obj = odvp.pointer;
376 if (obj->type != ACPI_TYPE_PACKAGE) {
377 ret = -EINVAL;
378 goto out_err;
379 }
380
381 if (priv->odvp == NULL) {
382 priv->odvp_count = obj->package.count;
383 priv->odvp = kmalloc_array(priv->odvp_count, sizeof(int),
384 GFP_KERNEL);
385 if (!priv->odvp) {
386 ret = -ENOMEM;
387 goto out_err;
388 }
389 }
390
391 if (priv->odvp_attrs == NULL) {
392 priv->odvp_attrs = kcalloc(priv->odvp_count,
393 sizeof(struct odvp_attr),
394 GFP_KERNEL);
395 if (!priv->odvp_attrs) {
396 ret = -ENOMEM;
397 goto out_err;
398 }
399 for (i = 0; i < priv->odvp_count; i++) {
400 struct odvp_attr *odvp = &priv->odvp_attrs[i];
401
402 sysfs_attr_init(&odvp->attr.attr);
403 odvp->priv = priv;
404 odvp->odvp = i;
405 odvp->attr.attr.name = kasprintf(GFP_KERNEL,
406 "odvp%d", i);
407
408 if (!odvp->attr.attr.name) {
409 ret = -ENOMEM;
410 goto out_err;
411 }
412 odvp->attr.attr.mode = 0444;
413 odvp->attr.show = odvp_show;
414 odvp->attr.store = NULL;
415 ret = sysfs_create_file(&priv->pdev->dev.kobj,
416 &odvp->attr.attr);
417 if (ret)
418 goto out_err;
419 }
420 }
421
422 for (i = 0; i < obj->package.count; i++) {
423 if (obj->package.elements[i].type == ACPI_TYPE_INTEGER)
424 priv->odvp[i] = obj->package.elements[i].integer.value;
425 }
426
427 kfree(obj);
428 return 0;
429
430 out_err:
431 cleanup_odvp(priv);
432 kfree(obj);
433 return ret;
434 }
435
int3400_notify(acpi_handle handle,u32 event,void * data)436 static void int3400_notify(acpi_handle handle,
437 u32 event,
438 void *data)
439 {
440 struct int3400_thermal_priv *priv = data;
441 struct device *dev;
442 char *thermal_prop[5];
443 int therm_event;
444
445 if (!priv)
446 return;
447
448 switch (event) {
449 case INT3400_THERMAL_TABLE_CHANGED:
450 therm_event = THERMAL_TABLE_CHANGED;
451 break;
452 case INT3400_KEEP_ALIVE:
453 therm_event = THERMAL_EVENT_KEEP_ALIVE;
454 break;
455 case INT3400_ODVP_CHANGED:
456 evaluate_odvp(priv);
457 therm_event = THERMAL_DEVICE_POWER_CAPABILITY_CHANGED;
458 break;
459 default:
460 /* Ignore unknown notification codes sent to INT3400 device */
461 return;
462 }
463
464 dev = thermal_zone_device(priv->thermal);
465
466 thermal_prop[0] = kasprintf(GFP_KERNEL, "NAME=%s", thermal_zone_device_type(priv->thermal));
467 thermal_prop[1] = kasprintf(GFP_KERNEL, "TEMP=%d", INT3400_FAKE_TEMP);
468 thermal_prop[2] = kasprintf(GFP_KERNEL, "TRIP=");
469 thermal_prop[3] = kasprintf(GFP_KERNEL, "EVENT=%d", therm_event);
470 thermal_prop[4] = NULL;
471 kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, thermal_prop);
472 kfree(thermal_prop[0]);
473 kfree(thermal_prop[1]);
474 kfree(thermal_prop[2]);
475 kfree(thermal_prop[3]);
476 }
477
int3400_thermal_get_temp(struct thermal_zone_device * thermal,int * temp)478 static int int3400_thermal_get_temp(struct thermal_zone_device *thermal,
479 int *temp)
480 {
481 *temp = INT3400_FAKE_TEMP;
482 return 0;
483 }
484
int3400_thermal_change_mode(struct thermal_zone_device * thermal,enum thermal_device_mode mode)485 static int int3400_thermal_change_mode(struct thermal_zone_device *thermal,
486 enum thermal_device_mode mode)
487 {
488 struct int3400_thermal_priv *priv = thermal_zone_device_priv(thermal);
489 int result = 0;
490 int enabled;
491
492 if (!priv)
493 return -EINVAL;
494
495 enabled = mode == THERMAL_DEVICE_ENABLED;
496
497 if (priv->os_uuid_mask) {
498 if (!enabled) {
499 priv->os_uuid_mask = 0;
500 result = set_os_uuid_mask(priv, priv->os_uuid_mask);
501 }
502 goto eval_odvp;
503 }
504
505 if (priv->current_uuid_index < 0 ||
506 priv->current_uuid_index >= INT3400_THERMAL_MAXIMUM_UUID)
507 return -EINVAL;
508
509 result = int3400_thermal_run_osc(priv->adev->handle,
510 int3400_thermal_uuids[priv->current_uuid_index],
511 &enabled);
512 eval_odvp:
513 evaluate_odvp(priv);
514
515 return result;
516 }
517
518 static struct thermal_zone_device_ops int3400_thermal_ops = {
519 .get_temp = int3400_thermal_get_temp,
520 .change_mode = int3400_thermal_change_mode,
521 };
522
523 static struct thermal_zone_params int3400_thermal_params = {
524 .no_hwmon = true,
525 };
526
int3400_setup_gddv(struct int3400_thermal_priv * priv)527 static void int3400_setup_gddv(struct int3400_thermal_priv *priv)
528 {
529 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
530 union acpi_object *obj;
531 acpi_status status;
532
533 status = acpi_evaluate_object(priv->adev->handle, "GDDV", NULL,
534 &buffer);
535 if (ACPI_FAILURE(status) || !buffer.length)
536 return;
537
538 obj = buffer.pointer;
539 if (obj->type != ACPI_TYPE_PACKAGE || obj->package.count != 1
540 || obj->package.elements[0].type != ACPI_TYPE_BUFFER)
541 goto out_free;
542
543 priv->data_vault = kmemdup(obj->package.elements[0].buffer.pointer,
544 obj->package.elements[0].buffer.length,
545 GFP_KERNEL);
546 if (ZERO_OR_NULL_PTR(priv->data_vault))
547 goto out_free;
548
549 bin_attr_data_vault.private = priv->data_vault;
550 bin_attr_data_vault.size = obj->package.elements[0].buffer.length;
551 out_free:
552 kfree(buffer.pointer);
553 }
554
int3400_thermal_probe(struct platform_device * pdev)555 static int int3400_thermal_probe(struct platform_device *pdev)
556 {
557 struct acpi_device *adev = ACPI_COMPANION(&pdev->dev);
558 struct int3400_thermal_priv *priv;
559 int result;
560
561 if (!adev)
562 return -ENODEV;
563
564 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
565 if (!priv)
566 return -ENOMEM;
567
568 priv->pdev = pdev;
569 priv->adev = adev;
570
571 result = int3400_thermal_get_uuids(priv);
572
573 /* Missing IDSP isn't fatal */
574 if (result && result != -ENODEV)
575 goto free_priv;
576
577 priv->current_uuid_index = -1;
578
579 result = acpi_parse_art(priv->adev->handle, &priv->art_count,
580 &priv->arts, true);
581 if (result)
582 dev_dbg(&pdev->dev, "_ART table parsing error\n");
583
584 result = acpi_parse_trt(priv->adev->handle, &priv->trt_count,
585 &priv->trts, true);
586 if (result)
587 dev_dbg(&pdev->dev, "_TRT table parsing error\n");
588
589 platform_set_drvdata(pdev, priv);
590
591 int3400_setup_gddv(priv);
592
593 evaluate_odvp(priv);
594
595 priv->thermal = thermal_tripless_zone_device_register("INT3400 Thermal", priv,
596 &int3400_thermal_ops,
597 &int3400_thermal_params);
598 if (IS_ERR(priv->thermal)) {
599 result = PTR_ERR(priv->thermal);
600 goto free_art_trt;
601 }
602
603 priv->rel_misc_dev_res = acpi_thermal_rel_misc_device_add(
604 priv->adev->handle);
605
606 result = sysfs_create_group(&pdev->dev.kobj, &uuid_attribute_group);
607 if (result)
608 goto free_rel_misc;
609
610 if (acpi_has_method(priv->adev->handle, "IMOK")) {
611 result = sysfs_create_group(&pdev->dev.kobj, &imok_attribute_group);
612 if (result)
613 goto free_imok;
614 }
615
616 if (!ZERO_OR_NULL_PTR(priv->data_vault)) {
617 result = device_create_bin_file(&pdev->dev, &bin_attr_data_vault);
618 if (result)
619 goto free_uuid;
620 }
621
622 result = acpi_install_notify_handler(
623 priv->adev->handle, ACPI_DEVICE_NOTIFY, int3400_notify,
624 (void *)priv);
625 if (result)
626 goto free_sysfs;
627
628 result = production_mode_init(priv);
629 if (result)
630 goto free_notify;
631
632 return 0;
633
634 free_notify:
635 acpi_remove_notify_handler(priv->adev->handle, ACPI_DEVICE_NOTIFY,
636 int3400_notify);
637 free_sysfs:
638 cleanup_odvp(priv);
639 if (!ZERO_OR_NULL_PTR(priv->data_vault)) {
640 device_remove_bin_file(&pdev->dev, &bin_attr_data_vault);
641 kfree(priv->data_vault);
642 }
643 free_uuid:
644 sysfs_remove_group(&pdev->dev.kobj, &uuid_attribute_group);
645 free_imok:
646 sysfs_remove_group(&pdev->dev.kobj, &imok_attribute_group);
647 free_rel_misc:
648 if (!priv->rel_misc_dev_res)
649 acpi_thermal_rel_misc_device_remove(priv->adev->handle);
650 thermal_zone_device_unregister(priv->thermal);
651 free_art_trt:
652 kfree(priv->trts);
653 kfree(priv->arts);
654 free_priv:
655 kfree(priv);
656 return result;
657 }
658
int3400_thermal_remove(struct platform_device * pdev)659 static void int3400_thermal_remove(struct platform_device *pdev)
660 {
661 struct int3400_thermal_priv *priv = platform_get_drvdata(pdev);
662
663 production_mode_exit(priv);
664
665 acpi_remove_notify_handler(
666 priv->adev->handle, ACPI_DEVICE_NOTIFY,
667 int3400_notify);
668
669 cleanup_odvp(priv);
670
671 if (!priv->rel_misc_dev_res)
672 acpi_thermal_rel_misc_device_remove(priv->adev->handle);
673
674 if (!ZERO_OR_NULL_PTR(priv->data_vault))
675 device_remove_bin_file(&pdev->dev, &bin_attr_data_vault);
676 sysfs_remove_group(&pdev->dev.kobj, &uuid_attribute_group);
677 sysfs_remove_group(&pdev->dev.kobj, &imok_attribute_group);
678 thermal_zone_device_unregister(priv->thermal);
679 kfree(priv->data_vault);
680 kfree(priv->trts);
681 kfree(priv->arts);
682 kfree(priv);
683 }
684
685 static const struct acpi_device_id int3400_thermal_match[] = {
686 {"INT3400", 0},
687 {"INTC1040", 0},
688 {"INTC1041", 0},
689 {"INTC1042", 0},
690 {"INTC1068", 0},
691 {"INTC10A0", 0},
692 {"INTC10D4", 0},
693 {}
694 };
695
696 MODULE_DEVICE_TABLE(acpi, int3400_thermal_match);
697
698 static struct platform_driver int3400_thermal_driver = {
699 .probe = int3400_thermal_probe,
700 .remove = int3400_thermal_remove,
701 .driver = {
702 .name = "int3400 thermal",
703 .acpi_match_table = ACPI_PTR(int3400_thermal_match),
704 },
705 };
706
707 module_platform_driver(int3400_thermal_driver);
708
709 MODULE_DESCRIPTION("INT3400 Thermal driver");
710 MODULE_AUTHOR("Zhang Rui <[email protected]>");
711 MODULE_LICENSE("GPL");
712